Please Contact at Telefax ट ल फ क स: 011 2323 6311 E-mail: ted@bis.org. in व य पकप पकच ल म मस द प र ख प र षण स ल Ref Date ट ईड 27/ ट - 1 22 01 2019 व द य त ए ह इब र ड हन व षय सम तत, ट ईड 27 प) पकच वह इ ज न यच ग ववभ ग पकच षद पक इववपक प सभ सदस य प ख) ववद य त एव ह इब र ड व ह ववषय सममनत, ट ईड 27, प सभ सदस य प ग) अन य सभ च ल ख व न प य मह दय/ मह दय, न म म खत प र ख स ह: प र ख स ख य ववषय TED 27 (13009) W - II ववद य त पक व ट र व ह प पक व तथ 30 मम ट प अ पतम पक व म पक (AIS 041:2015 प अमभन अमभग रहण) प प य रपक त म प मस द प अव प प अपक सम मनतय यह तत त ह ए भ ज प यदद अ तत यह म प ष ट ट र य म प प चपक म स व प त ह ज ए त इस पक अम प म आपक प व यवस य अथव प त म य पद इय आ सपत ह सम मनत प अ न तम नत थ : 22 02 2019 सम मनत यदद प ई ह त ल ददए गए प र चपक म म ख प रपकच म खत पकत पक अ हस त क ष प भ ज यदद प ई सम मनत प र प त ह ह त ह: अथव सम मनत म प व भ ष स त त र दट ह ई त रपक त प र ख प यथ वत अ नतम चपक ददय ज य ग यदद प ई सम मनत तप प प रप नत
प ह ई त ववषय सममनत प अघ यक ष प पक म श स अथव र प इ पक आग प प यश व ह प म ए ववषय सममनत प भ ज ज प त द प र ख प अ नतम चपक द ददय ज एग यह प र ख भ त य म प ब य प व तस इट www@bis.org.in पक भ रपक ब ह न यव द भवद य ( आ आ मस ह ) स रपक च म खत व ज ञ न प ई एव प रम ख पक च वह इ ज यच ग ववभ ग
Please Contact at Telefax ट ल फ क स: 011 2323 6311 E-mail: ted@bis.org. in DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE Ref Date TED 27/ T-1 22 01 2019 Electric and Hybrid Vehicles Sectional Committee, TED 27 1) All Members of Transport Engineering Division Council, TEDC 2) All Members of Electric and Hybrid Vehicles Sectional Committee, TED 27 3) All Others Interested. Dear Sir/ Madam, Please find enclosed the following draft standard: Document No. Title TED 27 (13009) W - II Electric Power Train Vehicles Measurement of net power and the maximum30 minute power (Identical adoption of AIS 041:2015) Kindly examine this draft standard and forward your views stating any difficulty which you are likely to experience in your business or profession, if this is finally adopted as National Standard. Last date for comments : 22 02 2019 Comments, if any, may please be made in the format given below and mailed to the undersigned at the above address. In case no comments are received or comments received are of editorial nature, you will kindly permit us to presume your approval for the above document as finalized. However, in case of comments of technical in nature are received then it may be finalized either in consultation with the Chairman, Sectional Committee or referred to the sectional committee for further necessary action if so desired by the Chairman, Sectional Committee.
The document is also hosted on BIS website www.bis.org.in Thanking you, Yours faithfully, Encl: As above (R R Singh) Scientist E & Head Transport Engineering Department FORMAT FOR SENDING COMMENTS ON BIS DOCUMENTS (Please use A4 size sheet of paper only and type within fields indicated. Comments on each clauses/sub-clauses/table/fig. etc be started on a fresh box. Information in Column 4 should include reasons for the comments and suggestions for modified wording of the clauses when the existing text is found not acceptable. Adherence to this format facilitates Secretariat s work) Doc. No.: TITLE: LAST DATE OF COMMENTS: NAME OF THE COMMENTATOR/ ORGANIZATION: Sl. No. Clause/ Subclause/ para/ table/ fig. No. commented Type of Comments (General/ Editorial/ Technical) Justification Proposed change
For BIS Use Only Draft Indian Standard Doc: TED 27 (13009) W-II January 2019 Electric Power Train Vehicles Measurement of net power and the maximum 30 minute power. ICS 43.120 Not to be reproduced without permission Last date for receipt of BIS or used as an amendment of comments is 22 02 2019 Electric and Hybrid Vehicles Sectional Committee, TED 27 Foreword This draft Indian Standard will be adopted by the Bureau of Indian Standards, after the draft is finalized by the Electric and Hybrid Vehicles Sectional Committee and approved by the Transport Engineering Division Council. This Standard prescribes the requirements for the measurement of net power and maximum 30 minute power of Electric Power Train Vehicles. In the formulation of this standard considerable assistance has been drawn from: AIS 041 (Rev 1):2015 Electric Power Train Vehicles Measurement of net power and the maximum 30 minute power.
TED 27 (12990) W Electric Power Train Vehicles Measurement of electrical energy consumption AIS 049 : 2016 Electric Power Train Vehicles - CMVR Type Approval for Electric Power Train Vehicles Central Motor Vehicles Rules, 1989 (as amended from time to time) Doc No MoRTH/ TAP/ CMVR - 115/116 (Issue no 4) In case of any variance between the standard and Central Motor Vehicles Rules, 1989 (as amended from time to time), latter shall prevail. Following document may be referred for latest update on statutory requirements related to Battery Operated Vehicles. Central Motor Vehicles Rules, 1989 (as amended from time to time) The composition of the committee responsible for the formulation of this standard is given at annex A. In reporting the results of a test or analysis made in accordance with this standard, is to be rounded off, it shall be done in accordance with IS 2 : 1960 Rules for rounding off numerical values (revised).
Electric Power Train Vehicles - Measurement of Net Power and the Maximum 30 Minute Power (Draft Indian Standard) 1.0 SCOPE This standard applies to the representation of the curve as a function of motor speed and the power at full load indicated by the vehicle/motor manufacturer for motors of electric drive trains and the maximum 30 minutes power of electric drive trains intended for the propulsion for L, M and N categories of Electric Power Train Vehicles. 2.0 REFERENCES 14272:2011 Automotive vehicles Types Terminology TED 27 (12990) W Electric Power Train Vehicles Measurement of electrical energy consumption 3.0 DEFINITIONS For the purpose of this standard the definitions given in document no TED 27 (12990) W in addition to definitions given in IS 14272 shall apply. 4.0 TEST CONDITIONS 4.1 The test for motor power may be conducted by testing the motor using a bench dynamometer or by testing the vehicle using a chassis dynamometer as per manufacturer s option. 4.2 The motor / Vehicle shall have been run-in according to the manufacturer s recommendations 4.3 If the power measurement can be carried out only on a motor with the gear box or a reducer mounted, the efficiency shall be taken into account 5 TESTING PROCEDURE 5.1 Bench Dynamometer Procedure 5.1.1 Auxiliaries 5.1.1.1 Auxiliaries to be fitted During the test, the auxiliaries necessary for the motor operation in the intended application as listed in Table-1 shall be installed in the same position as in the vehicle Table 1 Auxiliaries to be fitted for the Test to Determine Net Power and the Maximum 30 Minutes Power of Electric Motor
("Standard-production equipment" means equipment provided by the manufacturer for a particular application). No. Auxiliaries Fitted for net power and the maximum 30 minutes power test 1 DC voltage source Voltage drop during test less than 5 % 2 Speed variator and control device Yes: Standard-production equipment 3 Liquid-cooling Motor bonnet Bonnet outlet No No Radiator 1),2) Fan Fan cowl Pump Thermostat 3) Air Cooling Air filter Cowl Blower Temperature adjustment system 4 Electrical equipment 5 Bench test auxillary fan Yes, if necessary 1) The radiator, the fan, the fan cowl, the water pump and the thermostat shall be located on the test bench in the same relative position as on the vehicle.
The cooling-liquid circulation shall be activated by the motor liquid pump only. Cooling of the liquid may be produced either by the motor radiator, or by an external circuit, provided that the pressure loss of this circuit and the pressure at the pump inlet remain substantially the same as those of the motor cooling system. The radiator shutter, if any, shall be in the open position. Where the fan, radiator and fan cowl cannot conveniently be fitted for the bench test, the power absorbed by the fan when separately mounted in its correct position in relation to the radiator and cowl (if used), shall be determined at the speed corresponding to the motor speeds used for measurement of the motor power either by calculation from standard characteristics or by practical tests. This power, corrected to the standard atmospheric conditions should be deducted from the correct power. 2) Where a dis-connectable or progressive fan or blower is incorporated, the test should be carried out with the fan (or blower) disconnected or at maximum slip condition. 3) The thermostat may be fixed in the fully open position. 5.1.1.2 Auxiliaries to be removed The auxiliaries necessary for the proper operation of the vehicle, and which may be mounted on the motor shall be removed when performing the test. The following non-exhaustive list is given as an example: Air compressor for brakes; Power steering compressor; Suspension system compressor; Air conditioner system, etc. 5.1.1.3 Where accessories cannot be removed, the power they absorb in the unloaded condition may be determined and added to the measured power. The electric motor shall be supplied from a DC voltage source with a maximum voltage drop of 5% depending on time and current (periods of less than 10 seconds excluded). The supply voltage of the test shall be as specified by the vehicle manufacturer. 5.2 Chassis Dynamometer Procedure 5.2.1 While testing the vehicle on chassis dynamometer, the chassis dynamometer shall be adjusted for canceling the friction losses from the parts of the running vehicle other than the electric power train and the installed accessories. This may be carried out by calibrating the chassis dynamometer by coast down with the vehicle placed on the chassis dynamometer appropriately. 5.2.2 The power supply may be as given in Table 1 or may be from the Rechargeable Energy Storage System (REESS) of the vehicle. In such case, the voltage shall be maintained within the specified limits by supplying energy to the REESS using the power supply given in Table 1. 5.2.3 If the power supply is from the REESS of the vehicle, the REESS shall be charged according to the normal charge procedure for a period not exceeding 12 hour or as per vehicle manufacturer s recommendation. (cl. 4.5.2.1 of TED 27 (12990) W)
5.3 Setting conditions The setting conditions shall conform to the manufacturers specifications for the production motor and be used without further alteration for the particular application. 5.4 Data to be recorded 5.4.1 The test for determining the net power shall be carried out with the speed control set at the maximum position with full setting of the power controller. 5.4.2 Torque and speed data shall be recorded simultaneously. 5.4.3 If needed, the cooling liquid temperature recorded at the motor outlet must be maintained at ± 5 C of the thermostat temperature setting specified by the manufacturer For air cooling motor, the temperature at a point indicated by the manufacturer shall be kept within + 0/ - 20 C of the maximum value specified by the manufacturer. 5.4.4 The temperature of the lubricating oil measured in the oil sump or at the outlet from the oil temperature exchanger (if any) shall be maintained within the limits prescribed by the manufacturer 5.4.5 An auxiliary regulating system may be used, if necessary, to maintain the temperature within the limits specified in 5.4.3 and 5.4.4. 5.5 Accuracy of Measurements 5.5.1 Torque: ± 1% of measured torque The torque measuring system shall be calibrated to take friction losses into account. The accuracy in the lower half of the measuring range of the dynamometer bench may be ± 2 percent of measured torque. 5.5.2 Motor Speed : 0.5 percent of measured speed 5.5.3 Motor Inlet Air Temperature: ± 2 C 5.5.4 Vehicle Speed: ± 1 kmph 6 DETERMINATION OF NET POWER 6.1 The motor/vehicle and its entire equipment assembly must be conditioned at a temperature of 25 ± 5 C for a minimum of two hours before start of test. 6.2 The net power test shall consist of a run at full setting of the power controller. 6.3 Just before beginning the test, the vehicle / motor shall be run on the chassis / bench dynamometer for three minutes delivering a power equal to 80 percent of the rated maximum power at the speed recommended by the manufacturer 6.4 Measurements shall be taken at a sufficient number of motor speeds, (at least four) to define correctly the power curve between lowest and the highest speeds recommended by the manufacturer
6.5 The whole test shall be completed within 5 minutes. It may be necessary to recharge the batteries once for completion of the power curve measurement. 7 DETERMINATION OF MAXIMUM 30 MINUTE POWER 7.1 The motor/vehicle and its entire equipment assembly must be conditioned at a temperature of 25 ± 5 C for minimum four hours before the test. The electric motor / vehicle shall be run on the bench dynamometer/ chassis dynamometer at a power, which is declared by manufacturer for the maximum 30 minutes power. The speed is recommended to be in a range, at which the net power is greater than 90% of the maximum power measured in 6. This speed shall be recommended by the manufacturer. 7.2 Speed and power shall be recorded. The power must be in a range of ± 5 percent of the power value at the start of the test. The maximum 30 minutes power is the average of the power within the 30 minutes period. 8 TEST RESULTS 8.1 The net power and the maximum 30 minutes power for Electric Power Train Vehicles/ motor indicated by the manufacturer shall be accepted if it does not differ by more than ± 2 percent for maximum power and more than ± 4 percent at the other measurement points on the curve with a tolerance of ± 1 kmph for vehicle speed or ± 2 percent of the motor speed or motor speed range (X1 min -1 + 2 percent) to (X2 min -1 2 percent) (X1<X2), from the values measured by the Test Agency. Note: If the battery limits the maximum 30 minutes power, the maximum 30 minutes power of an electric vehicle can be less than the maximum 30 minutes power of the motor of the vehicle according to this test.